Alternative fuel deposit formation

Technical Report · Sun Jan 01 00:00:00 EST 1984

OSTI ID:6635136

TeVelde, J; Spadaccini, L J; Szetela, E J; Glickstein, M R

A heated-tube apparatus was used to evaluate the deposit formation rates of four liquid hydrocarbon fuels and to determine the effect fuel deposits have on the heat transfer characteristics of aircraft gas turbine fuel systems. The fuels tested were: a low- aromatic JP-5, a blend of 80 percent JP-5 20 percent hydrocracked gas oil, a blend of 50 percent JP-5 and 50 percent No. 2 heating oil, and a shale derived JP-5. Deposit formation rates ranging from 10 microgram/sq cm hr to 3000 microgram/sq cm hr were obtained at tube wall temperatures ranging from 480 K to 800 K, with peak formation rates occurring at initial surface temperatures of 644 K to 672 K. Results indicate that deposit formation rate correlates very well with initial surface temperature and the thermal stability rankings derived from present experimental results agree very well with rankings based upon independent JFTOT analysis. The deposit thermal resistance, as calculated from heat transfer measurements, correlates well with measured deposit quantity and thickness. Heat transfer analyses indicate that the deposit thermal conductivity increases with increasing deposit thickness, and ranges from values approximating the thermal conductivity of the fuel to values approaching that of amorphous carbon.

• Research Organization: United Technologies Research Center, East Hartford, CT (USA)
• OSTI ID: 6635136
• Report Number(s): AD-P-003129/4
• Resource Relation: Other Information: This article is from 'Combustion Problems in Turbine Engines Held at the Propulsion and Energetics Panel Symposium (62nd) Cesme (Turkey) on 3-6 October 1983', AD-A140700, p3/1-3/10
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
04 OIL SHALES AND TAR SANDS
33 ADVANCED PROPULSION SYSTEMS
GAS OILS
COMBUSTION PROPERTIES
HEATING OILS
JET ENGINE FUELS
SHALE OIL
CARBON
COMBUSTION PRODUCTS
DEPOSITION
HEAT TRANSFER
HYDROCARBONS
THERMAL CONDUCTIVITY
THICKNESS
DIMENSIONS
ELEMENTS
ENERGY SOURCES
ENERGY TRANSFER
FOSSIL FUELS
FUEL OILS
FUELS
LIQUID FUELS
MINERAL OILS
NONMETALS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM FRACTIONS
PETROLEUM PRODUCTS
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
025000* - Petroleum- Combustion
040500 - Oil Shales & Tar Sands- Properties & Composition
330800 - Emission Control- Alternative Fuels